English
endoderm
From endo- + -derm.
Proto-Indo-European *der- ‘to tear, tear apart’
Proto-Hellenic *dérō
Ancient Greek δέρω ‘to skin, flay’
Ancient Greek δέρμα ‘skin’
English derm
Today it means
noun One of the three tissue layers in the embryo of a metazoan animal, which will produce through development, the digestive system of the adult.
Language periods are conventional ranges, not dates for this word.
Etymograph / endoderm